Which of the following represents a chelating ligand
Because DMG is a polydentate ligand that binds the central atom nickel forming a ring-like structure.
The complex compounds which result from the coordination of carbon monoxide are known as
Metal carbonyls are coordination complexes of transition metals with carbon monoxide ligands. Metal carbonyls are useful in organic synthesis and as catalysts or catalyst precursors in homogeneous catalysis,
Which of the following cannot act as a ligand?
As a ligand Cl– is:
Cl- is π-donor (minus charge form σ bond with the metal orbitals, eg, t1u and a1g orbitals in Oh field. The lone pair of electron on Cl will try to form π-bonding with t2g orbitals of metal, electron cloud is transferred from Cl to metal d orbitals).
In the complexes [Fe(CN)6]3– and [Co(en)3]3+, the coordination number of iron and cobalt are respectively (en = ethylenediamine):
The oxidation number, coordination number and magnetic moment in the following complex, [Cr(C2O4)2 (NH3)2]- is:
Following are the transition metal ions of 3d series: Ti4+,V2+,Mn3+,Cr3+
(Atomic numbers: Ti=22,V=23,Mn=25,Cr=24)
Which ion is most stable in an aqueous solution and why?
Ti4+ is most stable as it has completely filled 3p orbital.
Octahedral complex of Cr (III) will be:
Which of the following is a spin paired complex ion?
Compound ‘X’ has the molecular formula CrCl2Br.6H2O. It can show which type of isomerism:
(I) Hydrate isomerism
(II) Ionization isomerism
(III) Geometrical isomerism
(IV) Optical isomerism
What is the change in the oxidation state of cobalt in the following reaction?
[Co(NH3)4 Cl2]+ + H2O → [Co(NH3)4 (H2O)Cl]2+ + Cl–
The first-row transition metal complexes having tetrahedral geometry are high–spin due to:
The zero magnetic moment of octahedral K2NiF6 is due to:
Oxidation state of Ni in [NiF6]2- :
x − 6 = −2
x = + 4
In +4 oxidation state, fluoride also behaves as a strong field ligand.
⇒ low spin d6 Ni(IV) complex.
⇒ unpaired electrons = 0.
⇒ zero magnetic moment.
What is the spin only magnetic moment value in (Bohr Magneton units) of Cr(CO)6?
The volume (in mL) of 0.1 M AgNO3 required for complex precipitation of chloride ions present in 30 mL of 0.01 M solution of [Cr(H2O)5Cl]Cl2, as silver chloride is close to:
Which of the following elements do not form a complex with EDTA?
Be is the only group 2 element that does not form a stable complex with [EDTA]4−⋅Mg2+ and Ca2+ have the greatest tendency to form complexes with [EDTA]4−.
When EDTA solution is added to Mg2+ ion solution, then which of the following statements is not true?
The total number of geometrical isomers for the complex [RhCl(CO)(PPh3)(NH3)] is:
The total number of geometrical isomers for the complex [RhCl(CO)(PPh3)(NH3)] is 3 since it is a square planar.
Which one the following octahedral complexes will be distorted:
The compound which exhibits Jahn-Teller distortion is: